Calculating-machine



H. KUENTZLER. cmcumms MACHINE. APPLICATION FILED APR. 7. )916. 1,305,124, Patented Mayra?, 1919.

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H. KUENTZLER'. vacuums :Mcm

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Patented May 27, 1919.

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APPLICATION FILED APU. 7. lgln 1,305,124. Patented May 27,1919.

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cALcuLAUNG MACHINE. APPLICATION FILED MR. l' |9l6 Patented May 2751919.

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Patented May 27, 1919.

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LA Immers H. KUENTZLEH.

C'ALCULATING MACHINE.4

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Iutonted May 27, 1919.

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CAICULMING MACHINE.

` APPLICATION FILED APH. IBIS- 1,305,124.

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H. KufNTzLEn. cALcvLATmG MACHINE.

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UNITED STATES PATENT OFFICE.

HENRY KUENTZLER, 0F LUZERNE, PENNSYLVANIA, ASSIGNOR TO'THE ADDER MAEHINE COMPANY, OF WILKES-VBAREE, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

CALCULATING-MACHINE.

Pal-.enten May 27', 1919.

Original application iled February 13,1911, Serial No. 608,384. Divided and this application filed April 7,

' i 191.'Serial No. 89,535.

To all whom t may concern.'

Be it known that 1,' Iinivny Kmiirrznnu, a citizen of the United States, residing at Luzerne, Luzerne county, Pennsylvania, havel invented nevi and useful Improvements 1n CalculatingMacliines, of which thev following is a specification.

This in vention'is more particularly directed to accumulating. mechanisms Efor, calculating machines, including .the transfer" or carrying devices, withtheir resetting mechanism and locks, and the zei'oresetting1necliaiiism. H A i. t

One object of the present invention is 4to provide an improved transfer o rfcarrying mechanism, the operation ofawliich ,is accurate and certain, which is not liable to operate accidentally, and the malicious trip )ing or manipulation of which is very dilficu t to cil'ect.` 'A

Another object is to providea novel forni of carrying mechanism which docs n ot l'equire the usualy idle stroke to, reset it, prior to taking a totah With my invention, a total or subtotal may 'he taken on :an operation immediately succeeding an adding o jeratioii in` 'which a carry was effected', .wit outan intervening idle stroke.V

Still another ob `e'ct is to provide ai siinpli lied and novel means to automatically lock the accunuilating wheels or counters in mesh with the addingr racks or drive members du 1P ing adding operations and which will be disabled to enable the disengagement of the counters and drive members.,

To these aiidjothcr ends, tlieinvention includes certain novel eaturesand combinations of parts, allofwliicli will be more 4fully set forth hereinafter and particularly; pointed out in the claims.

In the accoiiipanying drawings, Figure 1 is a right side elevation of theaccumulating or registering sectlon of a calculating machine, showing the parts iii-their normal positions of rest; l

Fig.` 2 is a left side sectional View vofthe saine taken on line 12`-12 of Fig. 5, sliow ing tlic positions of the parts Vnear the vc iid of the return stroke, the counters being still engaged with their drive members Fig. 3 is asimilar view, showii'ig the posi.- tions of the )arts just after a carry has been efl'ccted, anni prior to the disengagement of the racks and, pinioiis; f i

nine n Fig. 4 is a detailside View, showing` the means which locks the pinions and racks in inesh;. l

Fig. 5 is a' front elevation cfal fragment of the accumulator section;`

Fig. 6.is a left side sectional view, taken on line 16-16 of iFig. 5,'sliowing the locking mechanism for thecarry, the counter being disengaged from they racks when inV its position, and locked against under rotation.

Fig. 7 isa sii'nilai View, showing the position of thocounter when engaged with its rack, relatively to the carry-tripping and carry-locking mechanisms, just prior to the Fig. 8 is a similarview, showing the positions of theseliarts at the carryingl period, the carry-lookin mechanism 'beinrfreleased Fig. 9 is a rig it side sectional view, of the mechanism for shifting the counters relatively to their racks, in combination with the total key control of the counters, and the carry-i'esottin mechanism, the handle being at the fonwar( limit of its travel, in an addinoperation, the counters not being shown.

iig. 10 isa similar View, showing the normalpositions of the parts, and

FiU.,11 is a similar view, with the total key epressed.

This application is a divisional part of the application of Henry Kueutzler, filed February 18, 1911, Serial No. 608,384, and ref erence is madeA to the copending applications vof -Hunter & Knentzler, filed June 30, 1908,

Whose excursions, when an adding;opera-l tion is performed, are regulated by the usual index pins or stops set in the paths of the racks by depression of keyson the keyboard.

The racks are normally held againstadv anoing by restraining and restoringineans 'impart it to the rotatin controlled from a main shaft. Turning the lutter in one direction `withdraws the rackrestraining means to enable the racks to advan'ce. The shaft on its reverse rotation, presses the rack -restraining mechanism against the advanced racks to restorethemV to normal osition.

Ordinarily the counters are disengaged from the racks when the latter advance against the stops, mechanism being opcrated to engage the counters and racks prior tothe return of the latter'tonormal position. l

Transfer mechanism is provided to carry the tens from the counters of lower denomination to those4 'of the next hi her order, means being provided to reset tie transfer mechanism 1n readinessto repeat itsoperation when necessary. v

Depression of a total or special key4 operates mechanism to effect the enga ement of the counters and Aracks prior to tre advance of the latter, the travel of the racks being then controlled by the counters which are arrested in zero position by suitable means, to clear the accumulator. E

It will thus bc seen that the registering or accumulating section comprises a. drive mechanism the racks) adapted to receive or take the reading'from the keyboard and numeral wheels or counters, transfer 'mecianisn'i being provided to effect the' carry from counters of lower denon'iinations to adjacent counters of higher denominations. Locks are provided to retain the counters 'against turn ing, except when they are actuated bythe drive or the transfer-mecl1anisn1s, and to hold the carrying mechanism against iinp'ropcr operation.

Side frames 8, Figs.I 1 to 3, and 5 to 8, carry through shafts 210, 220 and 23() in their lower portion. f

Loosely mounted on shaft 210 arej a series of L-shaped arms 211, and on the 'shaft 230 is also looselyr mounted n corresponding series of arms 231. 'lhe-upper ends of arms 211 and 231 are pivoted, at'214a1itl 216 re- -spectively, to a series of 4positioning hars 215. These parts havea'-li1iiited forward and backward motion upon thesha'fts 210 and 230 as centers.A The forward motion, or to the right, as viewed in Figs. -2 and 3, is imparted by means of 'springs 213wl1ich are attached to arms 211,-at the pointii'212, and to arms 20-1 mounted on a slfafli 200 carried in the upper parts of the side frames 8. The movement of the shaft 200' inan anti-clockwise direction (Fig. 2) will stretch the sprin sv and cause a forward move- 'ment of tie'. positioning bars 215 until the forward eXtreinities 219 of the liars Contact With the usual key-set stops 111 (l.".ig.'10). As is'o'bvious, the extent of the forward `motion of the positioning bars 215 is de-y 'nections, y 'xnally shift 1n lunison with the positlonlng pendent upon the particular stops which in' tercept their path..

The baolcw'ard motion of this mechanism is imparted by means of a bail' 205 carried at thcilower extremities of arms '20-1, and bearin against projections 218 integrally formec on the positioningnbars.

To effect this oscillating movement by means of shaft 200, the latter is provided, as shown in Fig. 10, with a cam lever 203, which is oscillatcd in unison with the main shaft 40, by means of a crank arm 201 mounted on shaft 40 and provided with a roller 202, whichis disposed in a cam slot lof the lever 203. The oscillating mechan'ism, thus far described, rocks forward and then backward at'each actuation "of themachine. Y #Referrinrr Vagain to Figs. 2 `and 3, the shaft 220 ias loosely mounted thereon a series oflevers 221, the upper 'parts of which areformed `into segmental racks. These levers are scoured to the respective positionin barsv 215 by pin and slot `conercinafter described, and norbars and their sustaining arms 211and 231. The accumulator system comprisesa shaft 250 upon which are mounted a number of pinions 251 adapted to mesh with a corresponding number of the segmental gear levers 221, and numeral wheels 252 fastened to pinions 251 and bearing prcferabl two series of figures from Otto 9 arranger in sequence. By means to 4be subse uently described, the shaft 250 is movable 1n a vertical plane sufficiently to throw the pinions into and out of meshv with the segmental gears below. It will be stated here that in the normal ope-ration of the machine, the shaft 250 is in its up )er position when the positioning bars land segments are moving forward, and this movement, therefore, does not affect the, numeral wheels 252.l By the time the backward or return movement begins, however, the shaft 250 has been lowered so that the pinions 251 mesh with the segments,

and as the bail'205 forces the positioning bars 215 and segments 2211 backward, a corresponding de rree of movement is ,imparted to the numera Wheels 252. As'all the seg ments come to rest in a uniform position, it

Y iS obvious that the extent of actuation of the numeral wheels dependsjupon the ex- `tent of the )rior forward movelncnt of the.

Wheel to that of the neXt higher order. This is best shown in Figs. 2, 3, 5, 7 and 8. As shown in Fig. 2, the segmental gear lever 221 is pierced at 228 with an elongated .aperture which has a seniicircul'.n: recess 228 at its lowei` right hand end. vWithin this aperture is a rotatable sen'ii-cyliinh'ieal detent 2l7,.`whieh, when rotated to the posi.- tion shown in Fig. 3, is adanted to enter the recess 228". 4rlhedetent 1s pivoted in the positioning bar 215. Its extremity earries a small crank 206 to which is pivoted a light rod or link 224. Intermediate its length, the rod or link has al lug 226 to whlch a spring 225 is fastened', the other end of the spring being attached to the lever 221. rI`his spring maintains the rod 224 normally in a raised position, and bythis means the detent 217 is held in the angular position shown in Fig. 2. A sprinfr 4227 ]oining the lever 221 and the arm 211,'l1olds .the lever 221 lirinl against the detent 217 at all tin'ies. Um these conditions, the parts 211,221 and 231 nuove back and forth in )erfect unison upon their. respective sha ts 210, 220, and 230.

The shaft 220 is slotted throughout its length as at 222, and the lower end ofthe rod or link 2211 extends into this slot and is pirated at 276 (F ig. 6) to a trip mechanisln hereinafter described. If the rod 224; be moved downward against the tension of spring 225, the detent 217 will be rotated to the angular position shown in Fiff. 3, and the instant it assumes this position,tlie, spring 227 will draw the segment lever to the left relatively to the posltioning bar 215,1When the detent will oceupvV the-offset recess 228, This movement of the segment lever 221 .relatively to the positioning bar 2l-*iis equal l,to the distance between two teeth of its gear, .so that whenever the rod 221 is depressed,

the segment gear and the pinion 251 in mesh therewith, will move a distance oi one unit, in addition to such n'iovenient as mav beimparted to them by the iositioningbar- M Referring now to Fi s.- 7 and 8, each nu meral Wheel pinion is s iown equipped with a double cam 253. Pivotally mounted in the framework Se, at 270, is a leverV 271 which 4entends below the numeral wheel shaft. VThis lever is providedwith a nose 273 so disposed as to be contacted bythe 'ea1ns 253. The lever also has pivoted to it .at 274, a stem or link 275 which is pivoted, at 276, tothe lower extremity of rodorlink 4'224, previously described.

Thellever 271 is he d in the normal position shown ,in Fie. 7, by means of the ,spring 286,

Vhen the numeral 4wheel passes-ifrom its ninth position to thatof zero, as shown in F ig. 8, the lever 71 is cannned downward bythe cam 25?. The lever, whenv so. depressed, forces the ste1n.;275' downwardly,

which in turn, `gpulls the-linkbrgrod 224 down against the tension of the s )ring 225, to roel( the detent 217 until it reglsters with the extension 228 of the slot 228 to eii'ect a carry. As shown in F ig. 5, the cams 253 on one numeral wheel serve to tri J the carrying mechanism on the wheel el next higher order.` The cam 253 asses by the nose 27 3 of the lever 271, as tie counter turns from its 9 'to its 0 position, to enable the detent 217 to become effective when the segment 221 is reset.

Aifter the segment has been tripped into the carrying position, as shown 1n.Fi 3, it .is necessary lo restore the parts to ieir original positions, as shown in Fig. 2. To ellect this, the segment` levers are provided with rejections 229 Vwliiehare engaged by a bail 241 pivoted upon shaft 220. By means to be subsequently described, at the commencement of operation of the machine, therbail241 is nioved 'forward a short distance, forcing to the right, (viewing Fig.

3), before the positioning bars 215 have begun their-movement, all segments that have been tripped. At this time, the pinions are not in mesh with the segments. As soon as the segments have been restored, the detents 217 are snapped into their original positions (Fig. 2) by the springs 225.

In order to attainabsolute accuracy -in the registration and accumulation of items, especially at high speeds, a double system of locks is provided.' The muneral Wheel pinions arecontinuously .locked at all times except when lthey are being actuated by their respective segn'ients, and even in the latter instance, the segments are in mesh with the p inions and serve also to prevent any abnormal displaceinent. Iii-addition to these precautions, the tripping mechanism to effect the carrying is securely locked against accidental. movement `or jars.

f The means to .lockt the piuious is best shown in Fi s.;3 and tl. A bail 263 is pivoted to a sha'. 26.0 carried by the side frames 8F. This bail is drawn downward under the eenstanttension of a spring 265. It is equipped with acomb terminating in a series of detents 264 adapted to enter between the teeth of the pinions 251 and lock `them against rotation. In the absence of further mechanism, these detente would hold the pinions locked at all times, whether the numeral wheel shaftl is in its upper or its l-lowerposition. To unlock thepinions to permit of their actuation by the se ments, the following means are employed: i t cach end of the bail 263 an arm 261 is formed having a roller 262 at its extremity. Arms 255 (Fig. 4)v pivoted near the o Jposite ends A :of theshaft 220 are each provi( ed with a camming edge 256 on their upper ends. By means to be subsequently described, when the shaft 250 .is lowered so that the pinions :251; are in mesh iwith' the seg1nents221, the

arms 255 will moveto the left, as viewed in Fig. 4, and the cams 256 engaging the rollers 262, will raise the detents 264- from engagement with the pinions, thus allowing the latter to be turned by the racks 221.` In like manner, before the shaft 250 is raised, the arms 255 move to the right, (in F ig. 1), allowing thebail 263 with itsdetents 264 to engage the pinions 251 before the upward movement of the shaft 250 releases the pinions from the segments.

p The above mechanism takes care of the pinions, holding them secure from any pos sible false movement at all times; the means now to be described performs the same function in regard to the carrying mechanism. It is obvious that the carrying mechanism should be actuated Ionly at such times as the pinions are in engagement with the segments, and that the carrying mechanism should be locked against all movement'when the shaft 250 is in its up )er position and the pinions disengagcd.- "iis is accomplished as shown in 4igs. L(i and 7. The trippin levers 271 are cach `provided with a pin 27 which is adapted to engage with the respective feet 289 of a series of two-armed latches 287 pivoted `to shaft 280. Une arm 288 of cach latch extends under the numeral wheel shaft 250 and remains in continuous contact therewith, owing' to the u ward pull of spring 265 attached thereto. lln Fig. 6, the numeral wheel shaft is shown in its up ier position, and the arms 288, following tlhis movement, have shifted the feet 289 of the remaining arms 289 of the latches over the pins 277 on levers 271, as shown in the iigure, so that the latter cannot be rocked to trip the carrying mechanism. In'Fig. 7, the numeral wheel/shaft is shown in its lower position. Its movement to this position has displaced the feet 289 so that they no longer intercept the path of the pins 277 on levers 271, as shown in the-figure.

These locks are inoperative during the timethe pinions and segments are in mesh, so that to attain absolute accuracy, it is advisable to e nip the carrying mechanism with an additional lock whichwill be operative during eighteen of the twenty positions which-may be assumed by the pinions .when

in mesh with the segments. y

`This additional lock is best shown in Figs. 6, 7 and 8; The tripping levers 271 are each provided with a tail carrying a shoulder 272. Twaarmed locks 281 are pivoted to shaft 286, the horizontal arm of each of which is normally pulled downward by means of the springs 286 attached thereto and to the levers 271. The front ends of the-arms, cach terminate in a nose 288, the beveled edge of which is engaged by the related cam 253 on the corresponding numeral wheel pinion'. The rearward vertical arm of each loch terminates in a toe 285 which engages thc shoulder 272 on the 'corres )onding lever 271 and normally locks the latter against rocking, as shown in Fig. 7. At the moment a carry is to take placeas shown .in Fig. 8, one of the 'double cams 253 raises the arm 281 of the lock, moving the tee 285 free from the 4shoulder 272, and at `almost the same instant, the other cam 253 forces the lever 271f downward, to release the detent 217 and eli'ecttho carrying, as previously described. i A i It will be seen from the'y above description that out of the forty different positions which the numeral wheel pinions may assume, relativel, to their' actuating means, or drive mein ers, when in andont of engagement therewith the/curr ing mechanism is posi tively loclred in thirty-eight of these positions, and isunloclredonly in the two positions in which a carry should be made, when the pinions and drive members 'are engaged.

Still another locking mechanism, however, may be'sometim'es advisable in orderto enable the machine in.operateaccurately at extremely hifrh speeds.4 VIn F ig. 6, the numeral wheel t 1ere shown is in its ninth7 position and thenumeral wheel shaft 250 is in its upper position. The upper lcani 253 has come into contact4 with and has raised the'arm 281. The reaction between thetwo no contacting bevel surfaces shown in the Iigure, tends to move the cam and its numeral wheel in an anti-clockwise direction.` -If therefore the shaftF 250'is moved upward with great violence andV the locking means previously described, do not offer suliicient resistance, the striking of these parts might canse the numeral wheel to be dlsplaced one unit. This is prevented by means of a small projection 282 located on the under side of 44105 arm 281. This projection engages the eX- tmmity of the cam 253 under the conditions described above and prevents rearward movement of the parts at such time.

The a plica-tion of power to the register 110 section ibn the erformance of the functions described a Jove .is shownfin Figs. 9 and 10. The mechanism to move the gear segments back andforth hasA already been described; there remains the means to move 115 the numeral wheel shaft u'iward and downward, the meansV to move tie bail 241 to re store the carrying Vmechanism into potentially operati ve condition, and the means to A loclr the numeral wheel shaft in its lower 120 position and raise Vthe locking detente 264 from engagement with the pimons by means of the arms 255. E

In Figs. 9 and 10, 300 represents' :n. shaft located 1n the lower part of the framework 125 and in a vertical plane with the numeral wheel shaft 250. These shafts are connected at their opposite ends by means Vof toggle links 807 and 308, pivoted to other at .309. The links 307'ar'efast on the s raft 300. At- 1.30

tachcd toshaft 300 is a double armed lever 30G to the extremities of which are fastened springs 304 and 305. The other ends of these springs arefeonnected by means of links 302 and 303, respectively, to the two arms of a bell crank 301 fastened to the main shaft 40. By this structure the ino tion of shaft 40 is ooinnuinicalcd to shaft 300 through the springs whenever shaft 300 is free to move'. Spring 305 is normally tensioned to maintain the. toggle links 307, 308 straight, and thus hold the counters 252 out of mesh with theirscgments 221. Fastened to the upper toggle link on the .left side of the machine at 31.1, is a Sliding bar 312 having atits forward end a dumb bell slot 314. A rotatable keeper 310vpositioned within the slot supports this end of the bar. The koepel' is pivoted at 310 to the side frame and has an arm 313 to which is attached a spring 315, the other end of which is attached to the frame. A pin 310 set in the frame limits the motion of the keeper. The lower part of the keeper is provided with a projection 31'! which wipes the ex tensions 318 and 319 of a quadrant 321 attached to the auxiliary shaft 00, driven in an.)r suitable manner (not shown) by the main shaft 40. For present purposes, the quadrant may be mounted direc-tl) on the main drive shaft, as is usual in the Wales machine. The function of the mechanism thus far described is to hold the numeral wheel shaft 250 in its upper position during the forward stroke of, the machine until the forward stroke is nearly completed, to move it instantly to its lower nosition as the for ward stroke is completed; to retain the numeral wheel shaft in lowered position with the numeral wheels in mesh with their drive racks 221 during the return stroke, and to move the shaft to .its upper position as the reverse stroke is completed.

Its operation is as follows; On the actuation of themain sha-ft 40 in its forward stroke, the sprin 304 is stretched and spring 305 release( The sha ft 300 does not n\ove,however, asthe extension 319 of quad;r rant 321 has already moved forward ,from the position shown in Fig. 10 from under the projection 317 to free the keeper 310 to the action of the spring 315 which has drawn the keeper crosswise in the slot 314. The bar 312 is thereb)r held against .forward movement and the toggle 1s held in its straightline position, shown in Fig. 10. At

Vthe-conclusion of the forward stroke of auxiliary shaftGO, however, as shown in Fig. 9, the extension 318 ofy the quadrant rotates the keeper 310 to -its longitudinal position, the bar 312 snaps forward through the impulse of Spr'in' 304, which moven'icnt breaks the toggle an( therebydraws the numeral wheel shat downward. This shaft, as shown in Figs. 1 and`2, ismovable within ing the return stroke, spring 305 is put under tension and spring 304 slcckened. At theV completion of this stroke, as shown in` Fig. 10, the extension 319 of the quadrant again releases the keeer to enable the bar 312 to snap backwar under the action of the spring'305 to the position shown in thel figure, the toggle at the same time bein strai htcned and the-'nun'icral wheel 4sha t 250 e evated.

To dcaden the noise caused by the movement of the toggles `and numeral wheel shaft, the shaft 300 has keyed to it, a inember having two arms 329 and 349 extending from the shaft at a slight angle with each other, as shown in Figs. 10 and 11. Directl;7 under this member is a. bed rest 350 with which the arms have alternative Contact in accordance with the movement of the toggle. This bed rest ects asa stop to limit the motion of thetoggle in each direction,'and as the contacting parts have but little relative movement, and that movement being a comparatively slow one, there is no 'great shock of impact and the mechanism is practically noiseless.

As shown in Fig. 9, the shaft 250 is locked in its lower position b the hooked arms 255 which engage with siouldered collars 254 mounted on' the shaft 250. These arms 255 are normally pulled over the shaft by ineens of springs 325 lunder constant tension, the arms being pivoted at 220.' A dependin member 323 is attached to cach arm anc terminates'in a. foot adapted to engage theicspective pins 324 mounted upon the respective two-armed levers 243 attached to a )ack shaft 50 'driven from' the main shaft 40fby means of 'a crank 45E-(Fig. 1 0) secured to the main 1drive shaft and connected by a iitman 43 to a similar crank 44 attached to t 1e 'ack connected parts to their 'original positions after theyv have been rocked forwardly'. When the machine is et rest, as shown in" Fig. 10, the pins 324 hold the arms 255 ont of lockin position. As soon as the jack shaft moves' orward, however, the Jins are withdrawn from such contact and the arms close in on the shaft 20as it descends, as shown in 9; j i

The bail 251 to restore the carrying mecha.-

nism is actuated as shown in Figs. 9 and 10. The bail is formed with a downwardly li'ojecting arm terminatin in a stud 242. ne of the levels 243 on sha t 50 carries a tappet or pivoted member 244 provided with a sto'p edge 247, a spring 245 and a lug 246. In the position shown in Fig. 10 with the i'nacliine at rest, the arm 243 and pivoted member 2414 forni a broken toggle with the lug 246 in contact with the stud 242 on the carry Vresetting member, the spring 247 being teusioned. 0n the initial forward movement of the shaft 50, when the machine is started on its forward stroke, the toggle is straightened and this movement imparts an upward thrust to the 4stud 242 and bail 2411 to reset the carrying mechanism, including the segments 221, as described above. As appears from the construction shown, the remaining movement' of shaft 50, in the forward direction disen ages the tappet 244 from the stud 24:2 o A'the carry resetting member to permit'the latter to drop back to its normal idle positioin As the shaftV 50 approaches the end of its return stroke, the tappet 244- contacts the stud'242 to break the toggle, tln stur `By the mechanism thus far described, a numerical amount may be sot up on the keyboard by depressing the proper keys, and

this amount Y may be transferred -in'to the register section by operating the main shaft 40. This operation may be repeated as often as desired, the registers accumulating the various amounts transferred to them, the

figures on the numeral wheels showing the total sum of the amounts so transferred. v

In all of these operations, the osition of the gear se'inents is determined y the set-np lieyboard.` When it is desired that respond with the figures accumulated in the register, as is necessary in the taking of a total, almost all of the above modes of operai tion are reversed. The keyboard and its stop mechanism are disabled to allow the gear segments to move freely; the pinions are thrown into mesh with the se ments at the the segments are drawn forward beginning of the forward stro te so that as by their individual springs, the numeral wheels arerotated backward until their cams 253 come into contact with the zero stops 283, and the segments are thus held from further movemen'tafter having moved forward a distance proportionate to the displacement of the numeral wheel from itsI zero position; the pinions may then be' disengagodfrom the ear segments on the reverse stroke, so that 1 ie numeral wheels are leftin their zero positions, a function that is of equal im ortance witli'tlie transferring of the total rom the numeral wheels to the gear segments.

The means to accomplish these results are shown in Figs 10 and 11. In'y Fig. 10, in which the machine is shown at rest, 334 is' the stem of a totaling-key located on the left hand side'of the machine. The stein is vertically movable in a guide 335'and is con-v pivoter] a lever `338 having an o )en slot at its' forward extremity. A 'pin 33 mounted on the rod 312 and positioned inthe slotof lever 338, holds the latter in alinement.

' The previously described movement of the numeral wheel shaft is'reversed by the followin mechanism. Y Y

Wit i the machine at rest, as shown in Fig. 10, the lover 338 ivoted to the u )ward extension of the to aling lever. is in contaet with the pin 389 fastened to rod 312, as already described. Inthis condition of the machine, the rod 312 isiiet locked by the keeper 310, so that a downward movement of the totaling key will cause the rod @312 to move forward. Asthe rod is coi'inected with the upper toggle link at 311 as described above, tlie tog lejoint is broken and the numeral Wheel Sha t is drawn downward until the pinions are in mesh with the segments. As this be maintained curing and then to release it, or, if the keyr he held depressed by the operator until the beginning of thebackward stroke, in sueh case, to hold it depressed until the' backward stroke osition of the shaftinustf the entire forwardv stroke of the machine, the totaling key is is completed. An arcnate'gnard 352 constitutes a fixed detent. Iivoted at 354 is a detelit 3'53 which is normally in contact with the forward end of the guard V352, beingheld in that position Abya spring 357 which is also attached toa latch 355 pivoted at 356..V L At the opposite end ofthe guard-are detenta' 361 and 358 pivoted at 362 and 359, mapeotively, `and held :in operative position by u."

connecting spring 360.

When the totaling key is de ressed, the;

roller foroesdetent 353 to the le t, as viewed 1in the figures, and when the key .reaches its lowest position, the detent closes over they roller, locking' 1t in that posltlon', as sl ownin Fig. 11. The key 'cannot now be released until the machine has begun and completed a forwardstroke. In so doing, thequadrant movesI about 80 degrees to the left, as shown in Fig. 9, and the roller escapes through the detente 301 and 35S, which allow the roller to move past them in that-directiou. The purpose of these detente 301 and 358 is to prevent the depression of thc total ing key in'nnediallely after a forward stroke has been completed and the key released, the fixed uard 352 preventing depression of the total te during the return stroke.

In the ta ring of a sub-total, the totaling key must remain depressed during` both the forward and backward strokes of the inachine. This is determined hy the operator in holding down the key' at the conclusion of the forward stroke, at which time it is ordinarily released by the locking mechanisnrjnst described. As soonas the reverse movement begins, the key is again locked by the guard A.352. It now becomes necessary to -iol ease the key at the completion` of theba ck- Uward stroke and ns the machine comes to rest. This is done by means of the latch 355. When the totaling key is first depressed and is locked by detent 353, the

the guard 352. 'As the quadrant is move-d to the right on the return stroke, however," `in a sub-totaling operation, the roller contacts with the outside'lug 340 of the latch, forcing it to the left, as viewed'inthe figures. The latch contacts 4with the lower` part of detent 353, and forces it, in turn, to the left. These movements provide a passage for the roller between the detect 353 and the gua-rd 352, and allow the totaling key to -resume its upper-position.v l

In the taking of a grand total and the restoring of the. numeral wheels to' zero, however the totaling key is released Vat the end of the forward stroke.

343 is pivotcd a pawl 342 normally drawn' upward by a spring 344. The rear4 part of lever 338 attached to thef totaling vlever at 337, 4terminates in a foot 341 adapted to en- Gli gagerthe end of the pawl 342. 'In' the position of: parts shown in Fig. 10, the-toggle links 307, .308 and bar 312 are free to move 1n the ordinary course of operation' without At the same time, 'the numeral wheel shaftis elevated to throw hindrance from' the structure just described.

:When Afthetotal-'key is depressed, however,

as shown in Fig. l1, the an ular relation of pivot 337 on the totaling ever 331 to the pin 339 on har 312 undergoes a elrange, which results in the rear end 341 0f lever 338 moving u )ward until it abnts the end of paw] 3112. lhen the totaling key is released and moves u award, the lever 333 1s carried to -the right (1in the drawings) owing to the Vtension of spring 389, hereinafter referred to, and the consequent thrust against tl ie paw] 342 shifts the bar 31210 straighten the toggle links 307, 308 attachedthereto. This straightening movement of the toggle raises the numeral wheel shaft 250 to its u per position' priorto the return of tie toothed segments 221.` The power to efett .this movement is supplied from 'the spring 389 shown in Fig, 11. One end of this spring is fastened by a slotted link connection 391 to arm 386 which is atmched to shaft 330 and inm'es with the totaling lever 331. The other end is attached at 392, to :1n-arm 393-fastened to the jack shaft 50. The slotted link-connection allows the depression of the totaling key without the extension'of spring 389. On each actuation of the machine, the sprin is stretched by the :forwardmovement of Vt 1e jack shatt,but inl theordinary adding operatie-ns, the spring does not oppose-the action of the toggle breaking spring 304, because at suoli times there is no connection between the toggles 307, 308 and the shaft 330.

Depression of the total key 334-, rocks the lever 331 and its arm 336 and swings therear end of the lever 338 into aliuen'lent with the pawl 342 on the trip bar 312 connected to the upper toggle link 308 so that at the time the totaling lever is unlocked from the quadrant, at the end of the `forward stroke, 4the spring 389 is at its highest tension, and thel power stored therein 1s utilized to raise the totaling mechanism and the numeral wheel shaft, as described above.

The pin and slotleonneetion 391 vermits the totaling key to be depressed with but slight pressure, as only the comparatively light spring 387 o'ers resistance to its downward movement, while at the same time, it

pro-vides ample power for the restoration of the key and attache/d mechanism to 'their original positions.

The above described mechanism. provides for the-meshing of the pinions and segments prior to the forward stroke of the machine; the d r11-wing forward of the segments in the usual manne-r, and the backward rotation of the numeral wheels to their zero positions. Additional means are necessary in the totaling mechanism to free the numeral -w-heel shaft and the pinions from their respective locks during the movement just outlined, and also to insure that the stops which limit the backward movement of the A numeral wheels are in o Jerative position.

The arms 255 which lock the numeral wheel shaft in its lower position,' are disabled by depression of the totaling key, as follows: The totalingr lever 331 rocks =the shaft 330, on which are n'iountedbackward extensions 381, cach. of `which carries an u-pstanding projection 382, the upper part of which is adapted to engage a stud 383 fastened to the lower extremities 323 of the respective arms 255. The depression of the key, as shown in Fig. l1, forces the projections 382 against the studs 383 to rock the extremities 323 upward, thereby moving the upper parts of the arms 255 free of the numeral wheel shaft. This movement of the arms 255 would normally allow the dotents 264, formerly described, and shown in Fig. 4,to fall into and lock the pinio-ns 251 from movement. This is prevented as follows: As shown in Fig. 11, to the upper extremity 336 of the tota-ling lever 331 at the point345 is pivoted a link 346. The other end of this link is attached to a small crank 347fastened to, and adapted to rotate a ilattened barshown in section at 348. The frame 261, which is pivoted at 260 and carries the detents 264 mentioned above, is provided with a dependent tail 266, so disposed 'that when the bar 3428 is rocked to the position shown, bythe depression of the totalin key, the tail is forced to the left (in the., rawin'gs),

f and the frame end detente Aare prevented from dropping. into position to engage the plnions. o

Referring now to Fig. 7 the stops which arrest the backward rotation oi the numeral wheels when they reach zero position,` are formed by the vertical faces 283 of the locking arms 281, previously described. As shown in that ligure, the wheel, in its backward or anti-clockwise movement, will carry one of the cams 253 with it until the straight edge of the cam contacts with. the edge 283,

whereupon the cam, with its 'attached pinion and numeral wheel, are brought to a stop in zero position. The numeral wheel shown in this fi ure is in its ninth position and means must ie employed to prevent the locking' projection 282 from interfering with the above described movement of the wheel by engaging'the' extremity of the cam.v This means consists of an angled projection 284: forming a part of the lever 281. The rocking of the flattened bar 348, by the depression of the totaling key, Alocks the arms 281 in the Jositions shown yin Figli and maintains tlieinin that position' during lthe taking of the total. 4Ars shown, in,V this position,

the cams 253 will clear therprojections 282,

but will be. arrested by the extremities283' of the arms, which are nearer to the center of shaft 250, measured on a radial line from the same, tha-nare the proiections 282. Such locking action also maintains the levers 281 firmly in' placement. 4

It will be remembered that in the normal operation of the machine, the carrying mech-i actuate such ofthe pinions as stand at zero position against accidental dis-v and also such segments as-'haveeii'ccted a carry duringthe previous stroke, as the pinions and gear segments have been thrown into mesh by the actuation of the totaling key. "AS shown iii-Figs. 10 and 11, the pivoted members or tappets 244, previously described, aie 'each equipped with-a pinV 248. The extreme rearward parts of the totaling lever extensions 381 are bent upward as at 384, and each terminates in a foot 385. These feet are positioned to contact with the pins 248 attached to the pivoted men'ibers 244. When the totaling key is depressed, the feet 385 bear upon the pins 24t8'and move the members 244 to inoperative position, as shown inFig. 11. ,Y

Changes may be made in the form and arrangement of the several features disclosed without departing from the spirit and scope of this invention.

What I claim as new, is 1. In a` calculating machine; a transfer mechanism, including a shaft; numeral wheels and yinions; "spring-,actuated earrying levers; stents restraining said levers' trips to release the detente; means controlled bythe numeral wheels to actuate the trips; and means to lock the trips and the detents from operation except at the instant a carry is to take place. i

2. In combination two numeral wheels of adjacent orders; a cam carried by the numeral wheel of lower order; a lever adapted to beact'uated by the cam; mechanism to eliect a carry into the numeral wheel of higher order when the said lever` lis actuated and positive locking means for said lever.

3. In combination; twonumeral wheels of adjacent orders; a cam carried by the numeral wheel of lower order; a lever adapted to be actuated by the cam; mechanism to elfect-V a carry into the numeral wheel of higher order lwhen the said lever is actuated and means tohold said lever rigidly locke' at all times except at the instant of its actuation by said cam. 4., In combination a series of numeral .f 1einineotiug nien-ns, controlled bythe n geheel of: ne

1v,sos,124

wheels; eiuns mounted thm-een; carrying Alneeha-nisnns associatedv with the wheels including detent'i which nre netunted by the `seid coins; land positivey menne to hold the detente4 locked except nt the instant of actuar tion by the ciuns. y l l, v 5; ln eonibinntion, nunierul wheels; onrnving' nleeliunislns therefor; looking Ineens for the respective ceri-ying ineelninisins; :Ind inennsvon the numeral,wheels to diszililethe looking,` 1ne.'nisz1nd tn trip thel carrying inecluinisrns, respeetlvely.=V l

. (l. In combination, nnn'lernl wheels.; notuilling rnclis therefor; ineens to elfeot the en; gag-'ement o1;` disengagenient ,of the-wheels und the reeks; carrying1neel1enis|n s,includl'ing trips notueteill hy, the nuniernl uiheels; `:nid ineens adopted to lock sind trips :it :ill

times nhen the. numeral wleelsvlnndthe rocks are, disengngectl .7. In combinutiointhecnrrying trip 271;

the locking;4 lever 287 iidnpljed -to lor-lr the trip; .find the numerati wheel shntt 250 Controlling the movement of the .look 28T.

8. In' combination, numeral wheels: notuati'ng-rncks therefor; ineens to effect the ein gngenient .o r. disengagement of. the wheels und the reeks; carrying lnoclninisnis, includingtrips.,netiuited by the nunieijnl wheels; und menus adapted to look seid trips nt ull times when the lnlniielnl wlieelsniid the reeks ore engaged except at the p'oint where the numeral w leels erezin position to con- 9.-LThe.combination in 'zi-n accumulating ions und their respeotire numeral. wheels; ineens to determine the ninonnt ofrotution imparted to the pinions by the melts, ineluding' positioning liars; detente journnlecl in the positioning borsmid'entered into shouldered slots in the rocks; menus normally tending to 'retnin the :detents in lockinpr p ,0 sition against-the shoulders in the slots; numeral i wheel-controlled trip ,rinfn1'bersvv -to disable the detents; and ineens lfor shifting the rnc-ks when the dote-nts are disabled.

:10. Innn Anecnnnulating mechanism for calculating machines', tlieeonibineton with eseries of numero-l Wheels; and pinions con- :nelel'ed tothe iespeotive wheels; eta series ofdriving de'iiicesforfthel nuinernl nhecls, enel nieluding n positioningbfu.; n. Slotted freek, 4:said slot having u. shoulder interinod1nte it s ends; ineens:normally connect-.ing -the ypositioning bnr and 'ruck ngrnnst effective relative movement', seid mennsconipiising n sln-ftnble detentnorinelly engngnig the shoulder ofy the slot; trip-meclmnisi forgsnrrl loner o): i nd. operati e E0 no1-nml n'torlooked positions.

ezuxh incll-u'lin'gr n, positioning bnr; :t slotted nick, smid slot having n. shoulder intermeduite its ends; ineens noruuillj7 connecting the positioning bnr und ruck zlg'uinst effectire relative movement, sz'tid ineens conipi'isin g :i shiftnble del-,ent norn'i'nlly engulgingthe shrulllder of the slot; trip lneo'h'znrisin A'for Suid connecting"- nienns, 'Controlled by the'. nlln'reriil i'vheo'l of next lower order, und ol'ierntire to disable' the detont While the rook and pinion are in mesh; menus to automatically shi ['t 'the recit-.1', predetermined distance rele tively to the positioning bnr when the det'e'nt is disabled; ineens to return the mok to its vnorinnl position; und menus to restore' th'e detent to eflr'eotive position upon such restoration of the ruoli. y

12. In :tn :icouniulnting "1`nec1|nn`isn1 for calculating niz'tehines, thecombinntion with a.A serios of n 'u'niornl wheels; und pinions con nected therewith;- of n series ofdliving devices correlnted `irith the respectivopinions, ueh 4devineinoluding- :1 positioning bnr; nie'rtns to ndvnnee sind retire snid'h'sir; l'trneh' for one-hiriositioning flier;A zidnp'ted 'for no'wfenientrelltively thereto, nndengnigenhle with its oorrelzited pinion; lock'ingpmenns mounted on' tl'lje posi-l'.ioning bnr to norin'alljl ,prevent effective relative nmvonient between the melon-nd positiming` bmj means controlled by the pinion of 'next lo'weigoiideiito disnhle seid locking gnome,l tWhile tliefinclr sind pinion are in' l'nesh; n'i'e'nnszt'o shift the ruck relatively to the positioning bar when itsloeking ineens is disabled; and ineens-to restore the reel( und 'locking ineens to their "calculating machines, th'e combination with :t series of nnnernlwheels and 'correlated L anno'us; of. drivlng and transfer mechanism for' the nurne'el wl'ieelnneluding n series of positioning.hnrs with means'V to ndvnnoe und retire 'snid bars; n Series of slotted i'noks controlled by seid bers', and with whiclilhe pinions nmsh; shoulders foiluedfin the slots in the bers; shiftnble detents mounted in the Q der to .diszible the detonts; ineens' to shift the latiifelyto their positioning' bars when 4mechanism eli'eetive.

tliedctents are disabled; nieans'fo restore the detente and racks to their mutually interloeked positions; and locking mechanism likewise controlled by the numeral wheels of next lower orders, to prevent'the operation of the tripping mechanism, except Awhen said-numeral wheels are in predetermined positions. i

14:. In combination, numeral vvheel mechanisui, including numeral wheels; actuating racks for said wheels; operating diwicesfor the raclis'detents normally connectingv the racks and operating devices against .efl'ective relative movement; trips actuated the numeral Wheels todisable the detents means toz'sliift the actuating racks relatively to the operating devices when the detents`l aredisabled; and locks controlled by the numeral Wheel mechanism to hold thetripsngainst operation. i i i 15. In combination,numeral wheels; actuating racks therefor; operating devices l'for the racks; detents normallyconnecting the racks and operating devices against relative movement; suitably guidedrods connected with the detente; sprin to hold the detente effective; numeral W eel-controlled trip mechanism connected to the rods, to disable the detente; and means to shift the racks elatively to the operatimr devices at the time the detente` are disablned.

16. In a-ealculating machine, the combination with a series of numeral Wheels inouiited on a shaft and shiftablc into and out of adding position; of carrying mecha.- nism; trippingdevices for said carrying mechanism, including levers and latches effective to hold said levers against operation,

except when the numeral wheel'1fsliaft is shifted to a position to renderthe carrying 17.In a calculating machine,A the-combinatioirwith a shiftable shaft; anda series of numeral wheels mounted thereon; of earrying mechanism; tripping devices, associated with the numeral wheels of lower oi'- .ders to control the carrying l'riechanis'm, and .includingtrippmg levers; and latches,one arm -of each of which latches extends beneath the shiftable shaft, and the other arm of eachof which latches is effective to hold itscerielated trippinv-leveragainst operation.-

1S. In a ea cul ating machine,- the con'ibination with a shiftable shaft; and a series of nunieral wheels mounted thereon; of carrying mechanism; tripping devices associated the locking thereon; of carrying mechanism; trippilwr devices for the carrying mechanism;"anc-v locks to prevent the operation of the'e'arry.

ing mechanismi one of which is, controlled by the nuinera by the numeral wheel.

wheel shaft, andthe other dovices or the'earryingmechanism; locks to prevent ,the operation ofgthevcarryin `inechanism and means on the miniera wheels to disable the locks and operate the tripping i devices in -i inmediato sequence.

22. In a caleulatin mach1ue,tlie combination with aserics o numeral wheels; combined driveand transfer-members therefor; and retaining mechanism to hold the trans- A'fer members in cocked or set ositions; said wheels and 'members adapta for engagement and disengagement; of a locking lmeans prevent the transfer members from being tripped, except when Athe wheels and members are enga ed. 4

23. In combination, numeral wheels; norfor; tripping @devices 'for the carrying mechanisms; `positive locking means orthe trip deviec's'to hold all parts of the carrying 4 'mecl'ianisms' in potentially effective position,

and'against operation; and means to 'disable means and trip thc-carrying mechanisms for operation. 4 V

24. 'In a calculating machine, the combination 'with a series of numeral wheels; of individual transfer i mechanisms Afor the wheels, includingV 4means to retain the transfer meclianisinsin potentially efi'ective positions; and positive locking means to 'prevent the'improper operation of the transfer mechanisms.

25. In a `calculatinor machuie,the combination with a. serieso runner-.il wheels; drive members therefor; and means to engage and disengage. the drive` members and nume al `wheels; of a transfer mechanism operative through the drive members; and means to ,absolutelyf lock the transfer mechanism.

against operation, either accidentally or intentionally, when the numeral wheels and drive members are disengaged.

26. In a calculating machine, the combination with a series of rotatable counters;

and a seriesof combined drive and carrying members, adapted for engagement and dis- 'in ally station ary carrying4 mechanisms thereen agement; of dctents normally adapted to loc r the combined members against carrying o ierations; la plurality of locks to prevent tie release ,of encli detent, one of which locks `:is ldisabled bythe counters when moving into engagement with ythe members; and means controlled by the respective counters ldurin their rotation to disablejthe other of lseid inc {sl 427. I n a calculating machine, the combination with a series of rotatable counters; and n. series of' carrying members adapted for engagement and disengagement; of detente yto restrain the carrying n'ieinbers ngainst carrying'operations;a plurality of sets of locks to Aprevent the release of said deteliits,oiie set o fwliich locks is disabled by the counters when s lii'l'ited Viiitokmgagenient 4With the carrying members; andiiieans control led 'byV the respective counters during their rotation to disable the remaining` locks at predetermined points in the travel vof said counteis,

28, Iii n. calciilntingig machine, the coii|bination with a .series of counters; and a series of carrying members adapted for ,engaeiV tignent and disengagement; of detente sh ablerelatively the carrying members to restrain the carrying members against carrying operations; and latches to prevent the release' of the detente, and disabled only during engagement of the eouiiteis 4and carrying members, said latches adapted to be disabled 'by fthe 4act of enga ement of the counters 'and carrying -mein ers, and released for eli'ective operation by the disengagement of -the counters and carrying llienibe-isi i 29, In u. calculating machine, the coinbination with a series of counters; and carrying members adapted for en egeinent and disengagement; of detente siiftable relatively to the'eiirrying members, to restrain the carrying `members -against carryin operations; and 'latches eileetive to holt the dctenis ,against release except when the counters sind carrying members are engaged, said bitches ladapted to be disabled by the not of engagement of the comi-ters .and carrying members, and. released A,foreffective operation by the Vdiseligageinent of the counters "and carrying members.

e30; In a calculating machine, the combination with an ,accunuilator mechanism, including drive members; a shaft shiftnblc toivard and from the drive members; and n series o f numeral ,wheels individually rotatable upon the shaft; of carrying inechal nisin; tripping devices for the carrying mechanism; and locks Vfor the tripping devices, and controlledfby theshiitible shaft and the rotatable ivhees;

31., In a calculatiili panchine, the combination with :i series o numeral wheels; coini are engaf'ed with the'cnrr tcnt mechanism normally operative to lock the combined members against4 carryinlg nlperations; and means to positively loci tie dctcnt mechanism against ielense, either aecideiitnlly or intentionally, when the numeral ivlieels and drive members are disengaged, and also when they areenguged, except upon the occurrence of u. Jrodelerinincd relation between the individual,,Wheels und their combined carry and drive members.

32. In a calculating machine, the combination with a series of numeral wheels; a single series of combined carry 'and drive members therefor; means to engnve and diseng-.igc the combined carry and c rive ineinbers and the Wheels; and detects to normally prevent acarrying operation of the members; of trip devices for the dolente, and relatively to which devices thel wheels rotate; locks to zhold the trip devices against release; `and ineaiis on the numeral Wheels to disable the locks, and to operate the trip devices.

1 33. In a calculating machine, the combination with :i series of numeral wheels; of carrying 4mechanism relatively to which the 'numeral wheels are bodily shifliible to e1i gage and disengage therewith; tripping devices forthe carrying mechanism, including detents to hold the carrying mechanism iii cocked or set position, and levers through which the detente are operated; which levers are operable from the 'numeral wheels; and latches effective to lock the levers against ojiera-tion,except ivheii the numeral ivheels l ying mechanism, said latches adapted to be disabled by the act of enga-gement of the numeral wheels and carrying mechanism, and released for -ell'cctive operation by the disengageirient of thc numeral wheels and carrying mechanism.

In a calculating machine, the combination with a series of rotatable numeral f wheels shiftuble as a. unit in a direction at transfer niiechanisni for the numeral wheels;

and means to reset the transfer mechanism after its operation; of releasing mechanism to disable thc numeral Wheel lockingmecha,- nisin, and operate the tiiins'lfcr resetting niecluinism, and common to both.-

35. ln n calcula-tinte,Y machine, the combination with aseries of numeral wheels, and drive memberstherefor, adapted for en a evment and disengagement; means to loc; t ie numeral wheels when disengaged from their drive members; a. transfer mechanism operative thro-ugh the' drive yniembeis' and in eaiisto reset the `drive Vmembers aiter a, transfer; of releasing mechanism to disable A.meinher-resetting means, and the releasing.

the numeral wheel locks when the numeral wheels are in engagement with their drive members; and means to operate the drive mechanisim alid common to both. 86. In acalculating machine, the combi- -nation with a series of numeral wheels, and

drive members therefor adapted for engagement and diseugaocment; means to loc the numciral wheels when disengaged from their drive members' a. transfer mechanism operati ve through the drive members; and means to. reset the drive members after a transfer;

of releasing mechanism to disable the nu meral wheel locks when the numeral Wheels are in engagement. with their drive inemhersg and means to successively operate the -drive member-resetting means, and the releasinc mechanism, and common to both. .37.- In a calculating 1nachine, the combination with .a series of'numeral wheels; drive members therefor; means to engage and disengage the drive members and numera] wheelsl transfer mechanism operative through the drive members, to cause them to .make an additional step to effect a transfer; detente to normally prevent such carrying operation of thel drive members; and numeral 4vvlieel-control]ed means to trip thel detente; of a bail to restore the drive members to normal cocked position; and a positively driven shaft having a toggle device to operate the bail.

38. In a calculating machine, the combi.- iiation with a series of numeral Wheels; drive members'therefor; means to engage and disengage the drive members and numeral Wheels; transfer mechanism operative through the drive members, to cause them to make an additional step to effect a transfer; detente to normally prevent suoli carrying operation of the drivemembers; and numeral wheel-controlled means to trip the detents; of a bail to restore the drive members to normal cocked position a positively driven shaft having a toggle device to operate Athe bail; jlocks to ,prevent rotation of the numeral Wheels when 4disengaged from their drive members; a releasingr means to disable the locks when the numcral'wheels are in engagement with their drive members; and `means on the positively driven shaft to control the lock-disabling means.

39. In a calculating machine, the combination with a series of numeral Wheels; drive members therefor; and a transfer mechanism, operative through the drive me1nbers; of trip devices for the transfer mechanism.; 'locks to hohl the trip devices idle;

and double cams ou the numeral wheels; Y

. one arm of each lock located inthe path of one of the cams on each numeral wheel to en said -wl1eel, witli the corresponding trip device controlling' the transfer mechanism.

40. In a calculating 1naehine,the combination with Va series ofinuneral wheels; drive members therefor; and a transfer mechanism, operative through the drive members; of trip devices -for the transfer mechanism; locks to hold the trip devices idle; double cams on the numeral Wheelsone arm of each lock located in the path of one of the cams on each numeral wheel to be struck thereby to disable the lock just prior to the Contact of the remaining cam on said vvheelj with the corresponding trip device controlling the ytransfer incchanisnrf; and n'ieans on the locking -arni to prevent reverse rotation of the wheel. y V l ,41. In a calclatiir machine, the combination with a series o numerals wheels; and individual carrying mechanisms therefor,

including means -te retain said carrying mechanisms in cocked position; Vof n'ieans to positively lock the respective carrying mechanisms against improper manipulation.

lf2. In a calculatin machine, the combination with a'sciies c numeral wheels; and individu al carrying mechanisms therefor,

including means to retain said carrying' mechanisms in cocked position; of means to positively lock the respective carrying mechanisms againstimproper manipulation; and

means to temporarily disable the locking lllBiLllS.

43. In a calculating machine, the combination with a series of numeral wheels; of

, transfer mechanisms including means to retain said mechanismsrin set or cocked positions; means traveling with the numeral Wheels to trip said retaining means and permit the o )eration of the transfer mechanisnis; anc a safelyV device to lock the retaining means against being iinproperlytri iped.

44. In a calculating machine, the com ination with a series of numeral wheels; of.V

vices; and locking means to prevent the irnproper tripping of the transfer devices when the machine is in normal idle position.

4G. In a calculating machine, the combination with a series of numeral Wheels; combincddrive and transfer members therefor; and retaining mechanism to hold the members in set oi' cocked positions; said wheels 4and members adapted forel agement and" disengagement; of a locking e evice effective to prevent un improper transfer operation when the wheels and members are engaged; 

